:root{
  --bg:#070A10;--bg-2:#0B111B;--surface:#0F1622;--surface-2:#131C2B;
  --line:rgba(255,255,255,.08);--ink:#F3F6FB;--muted:#9DA9BC;--muted-2:#67738A;
  --amber:#FFC400;--orange:#F7941E;--glow:rgba(255,170,20,.55);
  --grad:linear-gradient(135deg,#FFD200 0%,#F7941E 55%,#FF7A00 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,210,0,.16),rgba(255,122,0,.10));
  --maxw:760px;--ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Outfit',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:'Sora',sans-serif;letter-spacing:-.02em;line-height:1.18}
a{color:var(--amber);text-decoration:none}
img{max-width:100%;display:block;border-radius:14px}
.amber{color:var(--amber)}
.grad-txt{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ambient */
.ambient{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.ambient .sun{position:absolute;top:-280px;right:-180px;width:680px;height:680px;border-radius:50%;background:radial-gradient(circle,rgba(255,170,20,.16) 0%,rgba(255,122,0,.05) 42%,transparent 68%)}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .4s var(--ease),border-color .4s}
.nav.scrolled{background:rgba(7,10,16,.82);backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--line)}
.nav-inner{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:70px}
.brand img{height:40px;width:auto;filter:drop-shadow(0 4px 16px rgba(0,0,0,.5))}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;font-size:.92rem;padding:8px 13px;border-radius:10px;transition:color .25s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{background:var(--grad);color:#1a1205;font-weight:700;font-size:.9rem;padding:10px 18px;border-radius:11px;transition:transform .25s var(--ease)}
.nav-cta:hover{transform:translateY(-2px)}
@media(max-width:720px){.nav-links{display:none}}

/* layout */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wide{max-width:1100px}

/* breadcrumb */
.crumb{font-size:.84rem;color:var(--muted-2);margin-bottom:22px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--amber)}

/* article header */
.art-head{padding:120px 0 10px}
.art-tag{display:inline-flex;align-items:center;gap:8px;font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--orange);background:var(--grad-soft);border:1px solid rgba(255,196,0,.25);padding:6px 13px;border-radius:100px;margin-bottom:20px}
.art-head h1{font-size:clamp(2rem,4.6vw,3rem);font-weight:800}
.art-meta{display:flex;align-items:center;gap:16px;color:var(--muted-2);font-size:.88rem;margin-top:22px;flex-wrap:wrap}
.art-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--muted-2)}
.art-hero{margin:34px 0 10px;border-radius:20px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/8;background:linear-gradient(150deg,#0c2740,#071a2c);display:grid;place-items:center}
.art-hero .ph{font-size:4rem;opacity:.5}

/* answer-first box (AEO) */
.answer{background:var(--grad-soft);border:1px solid rgba(255,196,0,.28);border-left:3px solid var(--amber);border-radius:14px;padding:20px 22px;margin:30px 0}
.answer .lbl{font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--amber);margin-bottom:8px}
.answer p{font-size:1.05rem;color:var(--ink);margin:0}

/* article body */
.prose{padding:14px 0 40px;font-size:1.07rem;color:#cfd7e4}
.prose h2{font-size:1.65rem;font-weight:700;margin:42px 0 14px;color:var(--ink)}
.prose h3{font-size:1.25rem;font-weight:600;margin:30px 0 10px;color:var(--ink)}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:22px}
.prose li{margin-bottom:9px}
.prose strong{color:var(--ink)}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose blockquote{border-left:3px solid var(--orange);background:var(--surface);padding:16px 20px;border-radius:0 12px 12px 0;margin:24px 0;color:var(--muted);font-style:italic}
.prose .callout{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;margin:26px 0;display:flex;gap:14px}
.prose .callout .ic{font-size:1.5rem;flex-shrink:0}
.prose .callout p{margin:0;font-size:.98rem;color:var(--muted)}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.96rem}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.prose th{background:var(--surface-2);color:var(--ink);font-family:'Sora';font-weight:600}
.prose td{color:var(--muted)}

/* faq */
.faq{margin:40px 0}
.faq h2{font-size:1.65rem;margin-bottom:18px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 20px;margin-bottom:12px;transition:border-color .3s}
.faq details[open]{border-color:rgba(255,196,0,.3)}
.faq summary{font-family:'Sora';font-weight:600;font-size:1.05rem;color:var(--ink);padding:16px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.5rem;color:var(--amber);transition:transform .3s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);padding:0 0 18px;margin:0}

/* CTA card */
.cta-card{background:var(--grad);border-radius:22px;padding:40px;text-align:center;color:#1a1205;margin:46px 0;position:relative;overflow:hidden}
.cta-card::before{content:"";position:absolute;top:-50px;right:-30px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.18)}
.cta-card h3{font-size:1.7rem;font-weight:800;position:relative}
.cta-card p{margin:10px 0 22px;position:relative;opacity:.85}
.cta-card a{display:inline-flex;align-items:center;gap:9px;background:#0a0a0a;color:#fff;font-weight:700;padding:14px 28px;border-radius:13px;position:relative;transition:transform .25s var(--ease)}
.cta-card a:hover{transform:translateY(-3px)}

/* author / share */
.art-foot{display:flex;align-items:center;gap:16px;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:30px 0;flex-wrap:wrap}
.art-foot .av{width:52px;height:52px;border-radius:50%;background:var(--grad);display:grid;place-items:center;font-family:'Sora';font-weight:800;color:#1a1205}
.art-foot b{display:block}
.art-foot span{color:var(--muted-2);font-size:.88rem}

/* related */
.related{margin:50px 0}
.related h2{font-size:1.4rem;margin-bottom:20px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rel-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .35s var(--ease),border-color .35s;display:flex;flex-direction:column}
.rel-card:hover{transform:translateY(-5px);border-color:rgba(255,196,0,.3)}
.rel-card .t{font-size:.74rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--orange);margin-bottom:10px}
.rel-card h3{font-size:1.05rem;font-weight:600;color:var(--ink);margin-bottom:8px;line-height:1.3}
.rel-card p{color:var(--muted);font-size:.88rem;margin-bottom:14px}
.rel-card .go{margin-top:auto;color:var(--amber);font-weight:600;font-size:.88rem}

/* ---- blog index ---- */
.blog-hero{padding:130px 0 30px;text-align:center}
.blog-hero .eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--orange);margin-bottom:16px}
.blog-hero h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800}
.blog-hero p{color:var(--muted);font-size:1.15rem;max-width:560px;margin:18px auto 0}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding:40px 0 80px}
.post-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;display:flex;flex-direction:column;transition:transform .35s var(--ease),border-color .35s}
.post-card:hover{transform:translateY(-6px);border-color:rgba(255,196,0,.3)}
.post-card .thumb{aspect-ratio:16/9;background:linear-gradient(150deg,#0c2740,#071a2c);display:grid;place-items:center;font-size:2.6rem;opacity:.85}
.post-card .pc-body{padding:22px;display:flex;flex-direction:column;flex:1}
.post-card .t{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--orange);margin-bottom:10px}
.post-card h2{font-size:1.15rem;font-weight:700;color:var(--ink);line-height:1.3;margin-bottom:10px}
.post-card p{color:var(--muted);font-size:.9rem;margin-bottom:16px}
.post-card .go{margin-top:auto;color:var(--amber);font-weight:600;font-size:.9rem}
.feat-post{grid-column:1/-1;display:grid;grid-template-columns:1.1fr .9fr;background:linear-gradient(160deg,var(--surface-2),var(--surface))}
.feat-post .thumb{aspect-ratio:auto;min-height:260px;font-size:4rem}
.feat-post h2{font-size:1.7rem}
@media(max-width:880px){.post-grid{grid-template-columns:1fr 1fr}.rel-grid{grid-template-columns:1fr}.feat-post{grid-template-columns:1fr}}
@media(max-width:560px){.post-grid{grid-template-columns:1fr}}

/* footer */
footer{background:var(--bg-2);border-top:1px solid var(--line);padding:50px 0 28px;margin-top:30px}
.foot-in{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.foot-in img{height:46px}
.foot-in .links{display:flex;gap:20px;flex-wrap:wrap}
.foot-in .links a{color:var(--muted);font-size:.92rem}
.foot-in .links a:hover{color:var(--amber)}
.foot-bottom{width:100%;max-width:1180px;margin:26px auto 0;padding:18px 24px 0;border-top:1px solid var(--line);color:var(--muted-2);font-size:.84rem;text-align:center}

/* whatsapp float */
.wa{position:fixed;bottom:24px;right:24px;z-index:70;width:58px;height:58px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 12px 34px rgba(37,211,102,.45);transition:transform .25s var(--ease)}
.wa:hover{transform:scale(1.08)}
.wa svg{width:29px;height:29px;fill:#fff}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}